Proto-IE: *perǝk'-
Meaning: ribs, chest
Old Indian: párśu- m. `rib', pārśvá- m., n. `region of the ribs, side, flank'; prṣṭí- f. `rib'
Avestan: parǝsu- f. `Rippe', pǝrǝsu- m. `Rippe (in Zs.); Rippengegend, Seite'; Osset fars `Seite, Strich, Gegend'
Russ. meaning: ребра, грудная клетка